toJson method
Implementation
Map<String, dynamic> toJson() {
final map = <String, dynamic>{};
map['customer_id'] = customerId;
map['customer_name'] = customerName;
map['email'] = email;
map['phone'] = phone;
map['created_at'] = createdAt;
if (cards != null) {
map['cards'] = cards?.map((v) => v.toJson()).toList();
}
return map;
}